| Paul Stanley, Charles F. Haas | ... | (Director) |
| Jonathan Glassner, Michael Giampa | ... | (Writer) |
| |
| Vic Perrin | ... | |
| Kevin Conway | ... | The Control Voice / ... (145 episodes, 1995-2002) |
| Alex Diakun | ... | Nicholas Prentice / ... (8 episodes, 1995-2001) |
| Eric Schneider | ... | Alien Inquisitor / ... (8 episodes, 1995-2001) |
| Garvin Cross | ... | Officer / ... (7 episodes, 1995-2000) |
| Kavan Smith | ... | Quarterback / ... (6 episodes, 1995-2001) |
| Larry Musser | ... | Clerk / ... (6 episodes, 1995-2001) |
| Nathaniel DeVeaux | ... | Captain / ... (5 episodes, 1995-1999) |
| Scott Swanson | ... | Emil Dobkins / ... (5 episodes, 1995-1999) |
| Robert Lewis | ... | Gould / ... (5 episodes, 1995-2000) |
| John Novak | ... | Dave Pettigrew / ... (5 episodes, 1995-1999) |
| Tom Butler | ... | Charlie Bouton / ... (5 episodes, 1995-2001) |
| Andrew Airlie | ... | Don / ... (5 episodes, 1996-2002) |
| Benz Antoine | ... | Security Guard #1 / ... (5 episodes, 1997-1999) |
| Kristin Lehman | ... | Janet Marshall / ... (4 episodes, 1996-2001) |
| David McNally | ... | Pete / ... (4 episodes, 1996-2000) |
| William deVry | ... | Ben / ... (4 episodes, 1996-2000) |
| Tom Heaton | ... | Crazed Man / ... (4 episodes, 1996-2001) |
| Bruce Harwood | ... | Dr. Avery Strong / ... (4 episodes, 1995-1999) |
| Michael Kopsa | ... | Commander Ivers / ... (4 episodes, 1996-1999) |
| Robert Moloney | ... | Agent Pinter / ... (4 episodes, 1995-2000) |
| Peter Outerbridge | ... | Dr. Andy Groenig / ... (4 episodes, 1995-2001) |
| Barry W. Levy | ... | Colonel Bell / ... (4 episodes, 1995-1999) |
| Joanna Piros | ... | News Anchor / ... (4 episodes, 1995-1999) |
| Kyra Azzopardi | ... | Catherine / ... (4 episodes, 1998-2001) |
| Ryan Reynolds | ... | Derek Tillman / ... (4 episodes, 1995-1998) |
| Matthew Walker | ... | Kra'dok / ... (4 episodes, 1995-2001) |
| Scott Hylands | ... | Colonel Roger Tennent / ... (4 episodes, 1996-2001) |
| Roger R. Cross | ... | Bartender / ... (4 episodes, 1995-2001) |
| Malcolm Stewart | ... | Daniel Tenzer / ... (4 episodes, 1996-2002) |
| Frank C. Turner | ... | Elder / ... (4 episodes, 1995-2001) |
| Gillian Barber | ... | Fisk / ... (4 episodes, 1995-2001) |
| Gabrielle Miller | ... | Charlotte Nichols / ... (4 episodes, 1996-2002) |
| Erica Carroll | ... | Claudia / ... (4 episodes, 2000-2002) |
| Jessica Steen | ... | Gina Beaumont / ... (3 episodes, 1996-2000) |
| Ken Pogue | ... | Dean Hardwick / ... (3 episodes, 1996-1998) |
| David Cubitt | ... | Colonel Faber / ... (3 episodes, 1995-2001) |
| Garry Chalk | ... | Detective Barnett / ... (3 episodes, 1995-2000) |
| Jill Teed | ... | Carolyn / ... (3 episodes, 1998-2000) |
| Kevin McNulty | ... | Commander / ... (3 episodes, 1995-2000) |
| Ken Camroux | ... | Admiral Jones / ... (3 episodes, 1995-1997) |
| Aaron Pearl | ... | Clark / ... (3 episodes, 1996-2000) |
| Susan Hogan | ... | Dr. Marissa Golding / ... (3 episodes, 1996-1998) |
| Ocean Hellman | ... | Fern / ... (3 episodes, 1997-2001) |
| Gerard Plunkett | ... | Admiral Birch / ... (3 episodes, 1997-2001) |
| Vincent Gale | ... | Corporal Hawthorne / ... (3 episodes, 1998-2000) |
| Sarah Strange | ... | Lisa / ... (3 episodes, 1995-1998) |
| Dale Wilson | ... | Frank McKenna / ... (3 episodes, 1996-2000) |
| Andrew Johnston | ... | DeWitt / ... (3 episodes, 1995-1999) |
| Blu Mankuma | ... | Captain John Owens / ... (3 episodes, 1995-2000) |
| Jerry Wasserman | ... | Dr. Silcase / ... (3 episodes, 1995-2000) |
| Garwin Sanford | ... | Dom Pardo / ... (3 episodes, 1996-2001) |
| Don MacKay | ... | Dr. Link / ... (3 episodes, 1995-1999) |
| John Tench | ... | Alex / ... (3 episodes, 1996-1998) |
| Saul Rubinek | ... | Aaron Zgierski / ... (3 episodes, 1995-2001) |
| Joel Palmer | ... | Andrew Rosman / ... (3 episodes, 1995-1999) |
| Lorena Gale | ... | Committee Member / ... (3 episodes, 1997-1999) |
| Michael St. John Smith | ... | Angus Wheaton / ... (3 episodes, 1997-1999) |
| William B. Davis | ... | Dr. Frank Biemler / ... (3 episodes, 1995-2001) |
| Ken Tremblett | ... | Businessman / ... (3 episodes, 1995-2001) |
| Eric Keenleyside | ... | Friedkin / ... (3 episodes, 1996-1999) |
| Fulvio Cecere | ... | Det. Richard Jacobs / ... (3 episodes, 1995-2000) |
| David Lewis | ... | Deputy / ... (3 episodes, 1996-2001) |
| Adam Harrington | ... | Billy Valentine / ... (3 episodes, 1996-1999) |
| P. Lynn Johnson | ... | Lucy / ... (3 episodes, 1995-2001) |
| Peter Bryant | ... | Commander Sullivan / ... (3 episodes, 1996-1999) |
| Doug Jones | ... | Alien / ... (3 episodes, 1998) |
| Tom Cavanagh | ... | Carl Toman / ... (3 episodes, 1995-1999) |
| Tom McBeath | ... | Detective Roth / ... (3 episodes, 1995-1998) |
| Michael Ontkean | ... | Dr. Charles McCamber / ... (3 episodes, 1997-2000) |
| Scott Owen | ... | Collins / ... (3 episodes, 1995-2000) |
| Angela Moore | ... | African American Woman / ... (3 episodes, 1996-1999) |
| Ron Halder | ... | Lab Assistant / ... (3 episodes, 1997-1999) |
| Terence Kelly | ... | Oscar Reynolds / ... (3 episodes, 1997-1998) |
| William MacDonald | ... | FBI Special Agent Grant / ... (3 episodes, 1995-2001) |
| David Neale | ... | Commander Richard Gordon / ... (3 episodes, 1995-1999) |
| Allixandra East | ... | Isabelle 'Bix' Bixel / ... (3 episodes, 1996-2000) |
| Devin Douglas Drewitz | ... | Isaac / ... (3 episodes, 1998-2001) |
| Don S. Davis | ... | General Callahan / ... (3 episodes, 1995-1997) |
| Mark Gibbon | ... | Bailiff / ... (3 episodes, 1997-2000) |
| Matthew Prior | ... | Boy / ... (3 episodes, 1998-1999) |
| G. Patrick Currie | ... | Ben / ... (3 episodes, 1999-2001) |
| Len Cariou | ... | Father Anton Jonascu / ... (3 episodes, 1995-2000) |
| Crystal Cass | ... | Alien / ... (3 episodes, 1996-1998) |
| Jennifer Sterling | ... | Detective Meacham / ... (3 episodes, 1997-2000) |
| Louis Ferreira | ... | Father John Royce / ... (3 episodes, 1995-1999) |
| Russell Ferrier | ... | Cop / ... (3 episodes, 1996-2001) |
| Judith Maxie | ... | Judge / ... (3 episodes, 1996-2000) |
| Christina Jastrzembska | ... | Karen Miller / ... (3 episodes, 1997-2001) |
| David Cameron | ... | Medic / ... (3 episodes, 1995-1998) |
| Andrew McIlroy | ... | Pallas Demon / ... (3 episodes, 1995-1998) |
| Barbara Tyson | ... | Carrie Emerson / ... (3 episodes, 1995-2002) |
| Timothy Webber | ... | Dep. Middleton / ... (3 episodes, 1996-2001) |
| Heather Hanson | ... | Young Helen / ... (3 episodes, 1996-1998) |
| Kathleen Duborg | ... | Hope / ... (3 episodes, 1997-2002) |
| Shaun Johnston | ... | Cop / ... (3 episodes, 1995-2001) |
| Michael Dorn | ... | Pete Claridge (3 episodes, 1995-2002) |
| Jesse Moss | ... | Jason Stewart / ... (3 episodes, 1995-2001) |
| Chilton Crane | ... | Catharine McCarty / ... (3 episodes, 1997-2001) |
| Robert Weiss | ... | Blue Tech / ... (3 episodes, 1997-2002) |
| Lochlyn Munro | ... | Waters / ... (3 episodes, 1995-2002) |
| Darryl Scheelar | ... | Ben / ... (3 episodes, 1998-2002) |
| Robert Patrick | ... | Major John Skokes (2 episodes, 1995-1996) |
| Amanda Plummer | ... | Dr. Theresa Givens (2 episodes, 1996-2000) |
| Kelly Rowan | ... | Isabelle Pierce / ... (2 episodes, 1995-1998) |
| Robert Wisden | ... | Justin Wells / ... (2 episodes, 1995-1999) |
| Nicole de Boer | ... | Cadet 2nd Class Bree Tristan / ... (2 episodes, 1995-1998) |
| Kate Vernon | ... | Judy Warren / ... (2 episodes, 1995-1998) |
| Erich Anderson | ... | Dr. Deanston / ... (2 episodes, 1996-2001) |
| Catherine Mary Stewart | ... | Brooke Miller / ... (2 episodes, 1996-2001) |
| Geraint Wyn Davies | ... | Dr. David LaSalle / ... (2 episodes, 1996-2001) |
| Victor Garber | ... | Dr. Ben McCormick / ... (2 episodes, 1996-2000) |
| Ian Tracey | ... | Declan McMahon / ... (2 episodes, 1996-2000) |
| Tanya Allen | ... | Amy Barrett / ... (2 episodes, 1998-2001) |
| Peter Stebbings | ... | Luke / ... (2 episodes, 1998-2000) |
| Nicholas Lea | ... | Jacob Hardy / ... (2 episodes, 1998-1999) |
| Maurice Dean Wint | ... | Capt. Roger Kimbro / ... (2 episodes, 1998-1999) |
| Leslie Hope | ... | Darcy Kipling / ... (2 episodes, 1999-2000) |
| Frank Whaley | ... | Cliff Unger / ... (2 episodes, 1995-2000) |
| Jonathan Scarfe | ... | Charlie Walters / ... (2 episodes, 1996-2000) |
| Nancy Sorel | ... | Dana van Owen / ... (2 episodes, 1997-2000) |
| Claire Rankin | ... | Ariel / ... (2 episodes, 1998-2000) |
| Michael Shanks | ... | Dr. Will Olsten / ... (2 episodes, 1998-2000) |
| Sofia Shinas | ... | Mary 25 / ... (2 episodes, 1995-1998) |
| Nick Mancuso | ... | Father / ... (2 episodes, 1996-2001) |
| Nicole Oliver | ... | Heather Cattrell / ... (2 episodes, 1996-2000) |
| Emmanuelle Vaugier | ... | Lisa Dobkins / ... (2 episodes, 1998-1999) |
| Joel Grey | ... | Dr. Nathan Seward / ... (2 episodes, 1999-2000) |
| Robbi Chong | ... | Hope Wilson / ... (2 episodes, 1999) |
| Colleen Rennison | ... | Jillian Rosman / ... (2 episodes, 1995-2000) |
| Noah Heney | ... | James Kendal / ... (2 episodes, 1996-1999) |
| Teryl Rothery | ... | Dr. Lucy Cole / ... (2 episodes, 1996-1997) |
| Bill Dow | ... | Doc Fink / ... (2 episodes, 1997-1998) |
| Hiro Kanagawa | ... | Ron Hikida / ... (2 episodes, 1998-2000) |
| Lynda Boyd | ... | Danielle Buchanan / ... (2 episodes, 1998-1999) |
| Michelle Beaudoin | ... | Beth / ... (2 episodes, 1995-2001) |
| Kerry Sandomirsky | ... | Kristen O'Keefe / ... (2 episodes, 1995-1998) |
| Steve Bacic | ... | Griff / ... (2 episodes, 1996-1997) |
| Donnelly Rhodes | ... | General James Eiger / ... (2 episodes, 1996-1997) |
| Britt McKillip | ... | Brook Bouton / ... (2 episodes, 1998-1999) |
| Camille Mitchell | ... | Leader of Hyacinth / ... (2 episodes, 1998) |
| Brent Stait | ... | Vince Baxter / ... (2 episodes, 1999-2000) |
| Patricia Harras | ... | Amy / ... (2 episodes, 1995-2000) |
| L. Harvey Gold | ... | Dr. Greeson / ... (2 episodes, 1995-1997) |
| Michael Sarrazin | ... | Marty Kilgore / ... (2 episodes, 1996-1999) |
| Andrew Wheeler | ... | Tony Blake (2 episodes, 1996-1998) |
| Sam Vincent | ... | Akira Matsumoto / ... (2 episodes, 1996) |
| Alan Scarfe | ... | Dr. Royce / ... (2 episodes, 1997-1998) |
| Jennifer Copping | ... | Corporal Harrier / ... (2 episodes, 1998-1999) |
| Beau Bridges | ... | Dr. Simon Kress (2 episodes, 1995) |
| Paul Jarrett | ... | Dr. Franklin Dreiden / ... (2 episodes, 1996-2000) |
| Harrison Coe | ... | John Arkelian / ... (2 episodes, 1996-1997) |
| Adrian G. Griffiths | ... | Boromir / ... (2 episodes, 1996) |
| Ingrid Kavelaars | ... | Angie Palmer / ... (2 episodes, 1997-2001) |
| Bill Cobbs | ... | Joe Dell / ... (2 episodes, 1997-1999) |
| Ron Rifkin | ... | Dr. Martin Nodel (2 episodes, 1997-1998) |
| Peter Onorati | ... | Frank Martin (2 episodes, 1997) |
| Cheryl Wilson | ... | Cynthia Walker / ... (2 episodes, 1998-2001) |
| Julie Patzwald | ... | Cammi / ... (2 episodes, 1998-1999) |
| David Warner | ... | Bill Trenton / ... (2 episodes, 1995-1999) |
| Benjamin Ratner | ... | Blanco / ... (2 episodes, 1995-1998) |
| William Sadler | ... | Frank Hellner (2 episodes, 1995-1998) |
| Jan D'Arcy | ... | Martha Adams / ... (2 episodes, 1995-1996) |
| Jay O. Sanders | ... | Ed Barkley (2 episodes, 1995) |
| Dwight McFee | ... | Bruce Johnson / ... (2 episodes, 1996-1998) |
| Don Thompson | ... | Doc / ... (2 episodes, 1998-2000) |
| Michael Tiernan | ... | Major Braithwaite / ... (2 episodes, 1998-1999) |
| Linnea Sharples | ... | Kamala Shastri / ... (2 episodes, 2000-2001) |
| Doug Abrahams | ... | Foreman / ... (2 episodes, 1995-2000) |
| Shane Meier | ... | Mark / ... (2 episodes, 1995-1997) |
| Sarah-Jane Redmond | ... | Kelly Risely / ... (2 episodes, 1996-1999) |
| Peter Yunker | ... | Instructor (2 episodes, 1996-1998) |
| David Kaye | ... | Ed Tupelo / ... (2 episodes, 1997-2000) |
| Jessica Harmon | ... | Little Girl / ... (2 episodes, 1997-1998) |
| Tara Spencer-Nairn | ... | Heather (2 episodes, 1997-1998) |
| Sandrine Holt | ... | Jade / ... (2 episodes, 1997) |
| Anthony Ulc | ... | Roger Bowden (2 episodes, 1998-1999) |
| Derek de Lint | ... | Carl / ... (2 episodes, 1999-2000) |
| Kwesi Ameyaw | ... | Dr. Adam Meares / ... (2 episodes, 2000-2001) |
| Lesley Ewen | ... | Mrs. Dell / ... (2 episodes, 1995-1999) |
| Paula Shaw | ... | Executive / ... (2 episodes, 1995-1998) |
| Ken Ryan | ... | Agent Tennyson / ... (2 episodes, 1995-1997) |
| Colleen Winton | ... | Patricia Fowler / ... (2 episodes, 1995-1997) |
| Tamsin Kelsey | ... | Dr. Glass / ... (2 episodes, 1995-1996) |
| Debbie Podowski | ... | Justine Vallé / ... (2 episodes, 1995-1996) |
| Matt Craven | ... | Alan Wells (2 episodes, 1995) |
| Maxine Miller | ... | Helen / ... (2 episodes, 1996-2001) |
| Dean McKenzie | ... | Kellar / ... (2 episodes, 1996-1999) |
| Jason Gray-Stanford | ... | Airman / ... (2 episodes, 1996-1998) |
| Joe Pascual | ... | Lieutenant Marquez / ... (2 episodes, 1997-1998) |
| Rick Ravanello | ... | Driver / ... (2 episodes, 1997-1998) |
| Laurie Murdoch | ... | Lawrence / ... (2 episodes, 1998-2001) |
| Holly Ferguson | ... | Heather / ... (2 episodes, 1999-2001) |
| Rice Honeywell | ... | Co-Worker / ... (2 episodes, 1999-2000) |
| Dee Jay Jackson | ... | Guard / ... (2 episodes, 1995-2001) |
| Bill Croft | ... | Gabriel / ... (2 episodes, 1995-1999) |
| April Telek | ... | Shirley Baxter / ... (2 episodes, 1996-1999) |
| David Lloyd Austin | ... | Admiral Sergei Yurov / ... (2 episodes, 1997-1998) |
| Lachlan Murdoch | ... | John Virgil Jr. / ... (2 episodes, 1997-1998) |
| Stephen Lang | ... | Dr. James Houghton (2 episodes, 1997) |
| Ian Robison | ... | Craig / ... (2 episodes, 1998-2001) |
| Nancy Allen | ... | Rachel Rose (2 episodes, 1995-1998) |
| Garry Davey | ... | Doctor / ... (2 episodes, 1995) |
| R. Nelson Brown | ... | Bartender / ... (2 episodes, 1996-2000) |
| Patrick Keating | ... | GX-17 / ... (2 episodes, 1996-1997) |
| Corrie Clark | ... | Young Sylvia / ... (2 episodes, 1996) |
| Michael Hogan | ... | Dr. Lawrence Sinclair (2 episodes, 1997) |
| Brenda McDonald | ... | Mrs. Eikenberry / ... (2 episodes, 1999-2000) |
| Walter Marsh | ... | Dr. Lambert / ... (2 episodes, 1995-1996) |
| Dwight Schultz | ... | Levi Mitchell / ... (2 episodes, 1995) |
| Scott McNeil | ... | Astronaut / ... (2 episodes, 1996-2001) |
| Lorraine Landry | ... | Deirdre Laird / ... (2 episodes, 1996-1999) |
| David Longworth | ... | Preacher / ... (2 episodes, 1996-1997) |
| Linden Banks | ... | Dr. Thomas Somerset / ... (2 episodes, 1997-2000) |
| Lee Taylor | ... | Bailiff / ... (2 episodes, 1997-2000) |
| Kirsten Alter | ... | Pelé / ... (2 episodes, 1997-1998) |
| Tobias Mehler | ... | Eric Nichols / ... (2 episodes, 1997-1998) |
| Bart Anderson | ... | Doctor / ... (2 episodes, 1997) |
| Beverley Elliott | ... | Celeste / ... (2 episodes, 1998-2001) |
| Derek Peakman | ... | Dr. Pastore / ... (2 episodes, 1998-2001) |
| Ed Evanko | ... | Jim Holbrook / ... (2 episodes, 1998-2000) |
| Rob Freeman | ... | Captain Rosen / ... (2 episodes, 1998-2000) |
| Arnie Walters | ... | Committee Member / ... (2 episodes, 1996-2001) |
| John 'Bear' Curtis | ... | Blacksmith / ... (2 episodes, 1997-1999) |
| Marcy Goldberg | ... | Council Member Roark / ... (2 episodes, 1998-2001) |
| D. Harlan Cutshall | ... | Captain / ... (2 episodes, 1998-2000) |
| Tim O'Halloran | ... | Man #1 / ... (2 episodes, 1998-2000) |
| Kamilyn Kaneko | ... | Kelly / ... (2 episodes, 1995-1997) |
| Mitchell Kosterman | ... | FBI Agent / ... (2 episodes, 1995-1996) |
| J.B. Bivens | ... | Mover / ... (2 episodes, 1995) |
| Alberta Watson | ... | Lynda Tillman (2 episodes, 1995) |
| Catherine Swing | ... | Nurse / ... (2 episodes, 1996-1998) |
| Ronin Wong | ... | Doctor #1 / ... (2 episodes, 1997-2001) |
| Gina Chiarelli | ... | Doctor #2 / ... (2 episodes, 1997-2000) |
| Althea McAdam | ... | Dr. Behrens / ... (2 episodes, 1997-1998) |
| Phillip Mitchell | ... | Mugger / ... (2 episodes, 1998-2000) |
| Eg Mahan | ... | Alien #2 / ... (2 episodes, 1998) |
| Karina Carreck | ... | Nurse / ... (2 episodes, 2000-2001) |
| Haig Sutherland | ... | Roy Evereznak / ... (2 episodes, 2000-2001) |
| Fred Henderson | ... | Acosta / ... (2 episodes, 1995-1998) |
| Gordon Clapp | ... | Dr. Randall Strong (2 episodes, 1995-1997) |
| Adrian Holmes | ... | James / ... (2 episodes, 1996-2000) |
| Betty Linde | ... | Helen Darnell / ... (2 episodes, 1996-1999) |
| Danny Wattley | ... | Dennis Cameron / ... (2 episodes, 1996-1998) |
| Linda Ko | ... | Female Student / ... (2 episodes, 1997-2000) |
| Gerry Rousseau | ... | Bum / ... (2 episodes, 1997-1999) |
| Mary Ann Skoll | ... | Judith Mason / ... (2 episodes, 1998-1999) |
| Peter Kelamis | ... | Brain Wakefield / ... (2 episodes, 1999-2000) |
| Ron Small | ... | Harold Sanborn / ... (2 episodes, 1999-2000) |
| James Crescenzo | ... | Host / ... (2 episodes, 2000-2001) |
| Yvonne Campeau | ... | Jaru / ... (2 episodes, 1995) |
| Robyn Driscoll | ... | Detective (2 episodes, 1996-1999) |
| Richard Leacock | ... | Dairy Guard / ... (2 episodes, 1996-1998) |
| Claire Riley | ... | Dr. Egan / ... (2 episodes, 1996-1998) |
| Gordon Tipple | ... | Detective #1 / ... (2 episodes, 1997-2000) |
| Winston Brown | ... | Male Staff Member / ... (2 episodes, 1998-2000) |
| Sean Millington | ... | Delta #1 Leader / ... (2 episodes, 1998-2000) |
| Woody Jeffreys | ... | Beck Sanders / ... (2 episodes, 1999-2000) |
| Kristina Matisic | ... | News Anchor / ... (2 episodes, 1999-2000) |
| Klodyne Rodney | ... | Reporter / ... (2 episodes, 1999-2000) |
| Kymberly Sheppard | ... | Victorine Demon / ... (2 episodes, 1995) |
| Brent Sheppard | ... | F.B.I. Agent #1 / ... (2 episodes, 1996-2001) |
| Jonathon Young | ... | Billy / ... (2 episodes, 1997-1998) |
| Bob Dawson | ... | Mr. Walker / ... (2 episodes, 1998-2000) |
| Jason Gaffney | ... | Joe Benton / ... (2 episodes, 1998-2000) |
| Paul Magel | ... | Caleb / ... (2 episodes, 1998-1999) |
| Peter Boretski | ... | Leon Zgierski (2 episodes, 1999-2001) |
| Martin Kemp | ... | Michael Deighton (2 episodes, 1995-1997) |
| Richard Thomas | ... | Dr. Stephen Ledbetter (2 episodes, 1995) |
| David Glyn-Jones | ... | Mr. Westbrook / ... (2 episodes, 1997-1999) |
| John Innes | ... | Priest / ... (2 episodes, 1998-1999) |
| Michael Cram | ... | Father / ... (2 episodes, 1995-1998) |
| Gary Jones | ... | Duncan / ... (2 episodes, 1995-1996) |
| Campbell Lane | ... | Noel Bachman / ... (2 episodes, 1996-1999) |
| Lloyd Berry | ... | Abraham Lincoln Re-Enactor / ... (2 episodes, 1997-2000) |
| Keith Provost | ... | Bartender / ... (2 episodes, 2000-2001) |
| Desiree Nicholson | ... | Jenny / ... (2 episodes, 1996-1997) |
| Howard Siegel | ... | Bum / ... (2 episodes, 1998-2001) |
| Jordan Weller | ... | Teen #2 / ... (2 episodes, 2000-2001) |
| Kevin Hansen | ... | Deputy / ... (2 episodes, 1996-2000) |
| Maria Louisa Figura | ... | Inga / ... (2 episodes, 1996-1999) |
| Lindsay Crouse | ... | Gwen Sawyer (2 episodes, 1999-2001) |
| Vincent Walker | ... | Boyfriend / ... (2 episodes, 1999-2000) |
| Kate Robbins | ... | Perry (2 episodes, 1995-1997) |
| Candice Connelly | ... | Mother / ... (2 episodes, 1996-1999) |
| Clancy Brown | ... | Sergeant Linden Styles (2 episodes, 1996-1997) |
| Clay St. Thomas | ... | Host on TV / ... (2 episodes, 1999-2001) |
| Dan Shea | ... | Cop / ... (2 episodes, 2000-2001) |
| Daniel J. Travanti | ... | Thornwell (2 episodes, 1995-1997) |
| Sharon Alexander | ... | Angry Woman / ... (2 episodes, 1996-1998) |
| Barbara Garrick | ... | Dr. Ellen Kersaw / ... (2 episodes, 1996-1997) |
| Perry King | ... | Senator Richard Adams (2 episodes, 1995) |
| Mitchell Laurance | ... | Mason Stark (2 episodes, 1997-1998) |
| D. Neil Mark | ... | Guard (2 episodes, 1995-1997) |
| Chris Sarandon | ... | Dr. Pallas (2 episodes, 1995) |
| Mimi Kuzyk | ... | Dr. Leslie McKenna (2 episodes, 1995) |
| Matthew Laurance | ... | Mr. Stark (2 episodes, 1997-1998) |
| Don Franklin | ... | Tim McAllister (2 episodes, 1997) |
| Vanessa Morley | ... | Miranda (2 episodes, 1995) |
| Rachael Crawford | ... | Sherry McAllister (2 episodes, 1997) |
| Christopher Bolton | ... | Orderly Grant (2 episodes, 1997) |
| Rob Daprocida | ... | Security Guard #2 (2 episodes, 1997-1998) |
| John Pyper-Ferguson | ... | Brian Chason / ... (2 episodes, 1996-2001) |
| Laura Harris | ... | Mona Lisa 37X / ... (2 episodes, 1997-2001) |
| Michael Ironside | ... | Ambassador Prosser / ... (2 episodes, 1999-2001) |
| Martin Cummins | ... | Esterhaus / ... (2 episodes, 1999-2000) |
| Michael Riley | ... | Gerard / ... (2 episodes, 1999-2000) |
| Duncan Fraser | ... | Coach Terni / ... (2 episodes, 1996-2001) |
| Marie Stillin | ... | Allison / ... (2 episodes, 1997-2001) |
| Jim Byrnes | ... | Gary Latimer / ... (2 episodes, 1998-2002) |
| David Lovgren | ... | Eric Tanner / ... (2 episodes, 2000-2002) |
| Sarah Deakins | ... | Amanda Nance / ... (2 episodes, 2000-2001) |
| Kim Coates | ... | Colonel Sage / ... (2 episodes, 1995-2002) |
| Alyssa Milano | ... | Hannah Valesic (2 episodes, 1995) |
| Brian Arnold | ... | Newscaster (2 episodes, 1996-2001) |
| Terry David Mulligan | ... | Chancellor Duncan Wilder / ... (2 episodes, 1997-2001) |
| Biski Gugushe | ... | Chief Technician David / ... (2 episodes, 1998-2001) |
| Michael David Simms | ... | Ed / ... (2 episodes, 1998-2001) |
| Ty Olsson | ... | Franklin / ... (2 episodes, 2000-2002) |
| Britt Irvin | ... | Judith Wilder / ... (2 episodes, 1997-2001) |
| Kirby Morrow | ... | Kirby (2 episodes, 1997-1998) |
| Gerry South | ... | Matt / ... (2 episodes, 2000-2001) |
| Kate Twa | ... | Dr. Annaud (2 episodes, 1997-1999) |
| Jane Sowerby | ... | Ruth / ... (2 episodes, 1998-2002) |
| Jay Brazeau | ... | Bernard Katz / ... (2 episodes, 1998-2001) |
| Dean Marshall | ... | Captain William Hinman / ... (2 episodes, 1999-2002) |
| John R. Taylor | ... | Leon / ... (2 episodes, 2000-2002) |
| Tatiana Szalay | ... | Kyra Look-Alike / ... (2 episodes, 2000) |
| Ron Selmour | ... | Carl / ... (2 episodes, 1998-2002) |
| Sebastian Spence | ... | Young Gerry (2 episodes, 1996-1997) |
| Grace Park | ... | Satchko / ... (2 episodes, 1997-2001) |
| Silvio Pollio | ... | Anthony (2 episodes, 1997-1998) |
| Deni DeLory | ... | Alexis Worthy / ... (2 episodes, 1999-2001) |
| Dean Wray | ... | Alvin Madden / ... (2 episodes, 1999-2001) |
| Catherine Lough Haggquist | ... | Eileen / ... (2 episodes, 1995-2001) |
| Zachary Ansley | ... | Adrielo / ... (2 episodes, 1997-2001) |
| Ian Marsh | ... | Hing Centurion / ... (2 episodes, 1999-2001) |
| Leanne Adachi | ... | Captain Alice Wheeler / ... (2 episodes, 2001-2002) |
| Michasha Armstrong | ... | Hmong / ... (2 episodes, 1999-2001) |
| Yvonne Myers | ... | Guard / ... (2 episodes, 2000-2001) |
| Marcel Maillard | ... | Homeless Man / ... (2 episodes, 2000-2001) |
| Dax Belanger | ... | Second Protester / ... (2 episodes, 1995-2001) |
| Gracie P. Aylward | ... | Lucy (2 episodes, 2000-2002) |
